Weighting device



Sept. 4, 1945; 4 HAFEL] I 2,384,250-

WEIGHTING DEVICE Filed Aug. 10, 1942 I muemor: a; Jc 05 H @1 28 [i WV} lgfk/ Patented Sept. 4, 1945 WEIGHTING DEVICE Jacob Hafeli, Uster, Switzerland, assignor to 'Actiengesellschaft Joh. Jacob Rieter & Cie.,

Winterthur, Switzerland Application August 10, 1942, Serial No. 454,315

In Germany August 1, 1941 2 Claims.

This invention relates to a device for weighting the press rollers of draw frames in spinning machines.

According to prior arrangements of this character, the press rollers are weighted on one maably engaging a draw hook I 0. The hook I!) is connected with weighting saddles H on the rollers l2,v I3. Supporting rods M are secured on each side of the machine under the ends of the lever 28.

chine side by a means containing a pneumatic The device operates as follows: or hydraulic pressure medium subjected to regu- The hydraulic or pneumatic medium in the latable pressure. As spinning machines are as a hose 6 is p under pr 0 that the 11058 rule double-sided, weighting is usually efiected will expand and force the pressure plates 1 by continuous weights disposed between the two downwardly. This pressure is transmitted to the sides of a draw frame, the ends of the weights double lever 8 and thus to the right and left of being engaged by draw rods which transmit the the machine, with the aid of the rods 9 and hook weight to the draw frames. In, to the saddles H and by the latter to the The present invention constitutes an improvepress rollers l2, I3. If a draw frame is to be m n r the P r arrangements n o r as relieved on one side, it is only necessary to lift weighting f the press r l n veral r all off the hook In with the saddles H to lower one draw n secti ns of bo h mach ne s d is b ught end of the double lever 8 until itrests on the adabout y a gle means containing a pneumatic jacent supporting rod M; the other side remains or hydraulic medium subjected to regulatable under the same pressure as before. pressure. This construction afiords the advan- What is claimed is:

tage that the means for'exerting pressure may be placed under the cover of the machine and that only a single means is required for the whole machine. Compared with the known arrangement, this involves a considerable saving and simplifies also the construction of the draw frames. Furthermore, the innovation can be installed in existing machines to get rid of the weights, so that a lot of material can be saved both in new and rebuilt machines.

The invention is illustrated by way of example in the accompanying drawing, in which Figure 1 is a section of the weighting means;

Fig. 2, a plan thereof; and

Fig. 3, a detail view of the roller weighting.

Between the roller beams l a cover 2 is provided. The beams l are supported by spring pieces 3 the connecting members 4 of which sustain a U-shaped section iron 5 which extends over the entire length of the machine and contains in its cavity a hose 6 for the reception of a pneumatic or hydraulic pressure medium. The hose 6 is sealed at both ends and fitted with means for regulating pressure. Pressure plates 1 resting on the hose 6 act on a double lever 8 whose ends are articulated to draw rods 9 mov- 1. A device for weighting the press rollers of draw frames in spinning machines on both sides thereof, comprising a U-shaped section iron disposed under the machine cover between the draw frames on both machine sides, a hose sealed at both ends and arranged in the cavity of said section iron for the reception of a pressure medium, and means connecting said hose with the press rollers of a draw frame.

2. A device for weighting press rollers of draw frames in spinning machines on both sides thereof, comprising a U-shaped section iron disposed under the machine cover between the draw frames on both machine sides, a hose sealed at both ends and arranged in the cavity of said section iron for the reception of a pressure medium, pressure plates supported by said hose, a double lever acted upon by said pressure plates, draw rods articulated to the ends of said lever, a draw hook engaged by said rods, said hook being connected with saddles resting on the press rollers, and bars on each machine side for supporting said double lever.

J'ACOB 

